Ophthalmic mounting



Nov. 15, 1927.

' F. A. STEVENS oPHTHALmIc MOUNTING Original Filed Aug. 5,. 1921 Patented Nov. 15, 1927.

UNirI-:D STATES italiansN PATENT oFF1c`E.` f

FREDERICK A. STEVENS, OF PROVIDIENCE, RHODE ISLAND, ASSGNOR TO BAU'SCH .AND

LOMB OPTICAL COMPANY, OF ROCHESTER, NEW YORK, A. CORPORATION OF `NEWT YORK.

orn'riaenurre MOUNTING.

Original application led August 5, 1921, Serial No. 489,947. n Divided and. this application filed J'anuary15, 1924, Serial No. 666,313.

The present invention relates to ophthalmic mouutings comprising non-metal members, such as temples and lens-holding frames, that are connected together by met-al 5 hinges, and it has for its object to secure the hinges in place upon the non-metal members in a new and improved manner. The prerent application is a division of a copending application, Serial No. 489,947, tiled August In the accompanying drawings, Fig. l 1s a. fragmentary perspective view oi an ophthalmic mounting comprising a lens-holding frame and a temple hinged` thereto accord ing to the present invention; Fig. 2 is a section taken upon the line 2-2 of Fig. 1:, and Figs. 3 to 6 are similar views of modifications. Y Y

In commercial ophthalmic mountings ot the above-described character, the pivotally connected hinge plates of the metal hinges. have hitherto been secured to the non-metallic'- members by pairs of rivets passing through the hinge plates and the members. These have not been fully satisfactory. It has been proposed to mount beveled hinge plates in previously prepared beveled grooves of' the non-metallic members. and to hold them in place by cement, or by single screws. There is a tendency, however, during the torsional movement of the temple, for the beveled walls of the hinge plates to twist or turn in their grooves, causing them to bite into the beveled-groove walls and weakening the brittle, non-metallic material, so that the joint ultimately becomes veryv loose.

According to the present invention, `the hinge-plate-receiving recess 2 of the non- 0 metal member, such as a lens-receiving frame disposed, blunt side walls 6, and the walls 8 of the hinge plate lOin contact with the walls 6 are correspondingly blunt, so that twisting or turning of the hinge plate within its groove is prevented. The lens-receiv ing frame 3 and the temple 4 are shown provided with beveled end faces 11 that are adapted to engage when the temple occupies its open position, as illustrated in Fig. l, to limit the pivotal movement of the temple. To prevent the hinge platev fallingtransversely out of its recess, the mouth ot the recess is made narrower than its maximum 3, or a temple 4, is provided with oppositely Renewed June 2S. 1926.

width. The hinge plate may be inserted in the recess by sliding it through an open end 'of the recess, or in any other desired manner.

The portions 12 ofthe walls 6 near the mouth of the recess `may be parallel to the portions of the walls 6 near the bottom wall 14, as shown in Fig. 2, or they may be in-` clined, as 1s shown in Fig. 3).V The ,portions 6, but the groove 20 in the non-metallic terial must then be made sharp-cornered at 22 or round to prevent the metal tongues 24 biting into the non-metallic material and ultimately causing a loose joint. Longitudinal movementci the hinge plate within the recess may be prevented by the use of cement or, preferably, bythe use oi single rivets or screws 34. yA hinge plate so mounted can notaccidentally be` separated from its temple, and it cannot twist or otherwise become loosened. f

The invention is not restricted to the exand described herein, but is subject to modif-` iication within the spirit and scope oit' the appended claims.

kWhat is claimed is:

' 1. An ophthalmic mounting comprising a member constituted ot non-metal material having a recess provided` with a bottom wall and blunt side walls. the blunt side walls being substantially at right angles to the bottom wall near the bottoml wall, the side walls being closer togetherr at the mouth than .at the'bottom ot the recess, whereby the mouth of the recess is narrower than `act embodiments thereof that are illustrated the maximum width of the recess, and a hinge plate seated within the recess having blunt walls in Contact with the blunt walls oi the recess.

Q. An ophthalmic mounting comprising a member constituted. of non-metal material having a recess provided with a bottom wall and blunt side walls, the blunt side walls being substantially at right angles to the bottom wall near the bottom wall, the side walls being closer Vtogether at the mouth than at the bottom of the recess, whereby the mouth of the recess is narrower than the maximum width ot the recess, a hinge plate seated withinthe recess having blunt 'walls in contact with` the blunt walls ot the recess, and means for securing the hinge plate within the recess. i

3. An ophthalmic` mounting` comprising a member constituted of." Anon-metal material having a recess provided with a bottom wall and` blunt side walls, the side walls being p closer together at' the mouth than at the bottom ot the recess, whereby the mouth ot the recess is narrower than the maximum width ot the recess, and a hinge plate seated within the recess having" walls in contact with^ the blunt walls of thc recess` the'closertogether portions oi the walls near the mouth ofthe recess being parallel to the portions ol the walls near the bottom wall. ot the recess." p i t t 4. An ophthalmic mounting comprising a member constituted of non-metal material having a recess provided with a bottom Wall and hluntsidewalls, the side walls being;

closer together at the mouth than at the bottoniot the recess whereby tbe mouth of the recess is Anarrower than the maximum width ot the recess, the portions of the walls near thezmouth of therecess being'parallel tothe portions ot `the walls near the bottom `wall 'of the recess, and a hingeplateseated within the recess having walls in Contact with the blnntwalls of the recess,several of" the hingeplate walls constituting tongues biting into the non-metal material. p

5.` An ophthalmic mounting comprising two members, a" hinge comprising a plurality ally connecting the temple to the frame and comprising two pivotally connected hinge plates, the trame and the temple each having a recess provided with a bottom wall and blunt side Walls, the blunt side walls being substantially at right anglcsto the bottom wall near the bottom wall, wherebythe mouth oit each recess is narrower than the maximum width thereof, one ol the hinge plates being seated within each recess, the hinge plaies having blunt walls in contact with the blunt walls of the recess, and the trame and the temple being provided with beveled end faces that are adapted to engage to limit thepivotal movement of the temple. t

7. The hingedly connecting' o'l" temples to the traine ot spectacles. consisting in arranging recesses otT shapein cross section in one tace oit the tcniples and extending inward from the buttend and in a tace ol` the trame extending inward from the lateral marginal portion thereof, providing liinge members arranged `with a leaf anda per-` forated knuckle extending at a right anglo to each other, the leal: having a cross seof,

tional loiin to correspond with the cross sectional shape of the recesses, intei'engag-` ing the knuckles ot the hinge members and engaging a pintle in the pertorations of the interengaged knuckles, and then connecting the temples to the trame by engaging the leaf of one hinge member in the recess vin the temples `and engaging the leaf of the other hinge member in the `traine recessm 2 8. An `ophthalmic mounting comprising" a ineinbei'having arecess that is ianed in cross section.,` and a hinge `member in the recess having a leaf and a knuckle,` the leaf having a cross-sectional torni to correspond with the cross-sectional .shape of the recess.,`

9. In a hinge 'tor connecting the temples tothe `traine (ot spectacles.` a pair` oit hinge members, each hinge member inirluding :i

leat and a knuckle integral with the leaf,`

the knuckles being arrangeril `with pintleengaging pertorations. and the lca'f being T-shaped in cross section.`

ln testimony whereof` l have hereunto` subscribed my name this 10th day of January, 1924.

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